Apparatus for cooling internal-combustion engines.



E. DE NORMANVILLE. APPARATUS FOR COOLING INTERNAL COMBUSTION ENGINES. APPLICATION FILED APR. 28, 1913.

1 ,O82,233, Patented Dec. 23, 1913.

coLuMnlA PLANDGRAPII co., WASHINGTO\'. u, c.

APPARATUS FOR COOLING INTERNAL-COMBUSTION ENGINES.

Specification of Letters Patent.

Application filed Apri128, 1913. Serial No. 784,174.

To all whom it may concern."

Be it known that I, EDGAR DE NORMAN- viLLn, a subject of the King of Great Britain, residing at 21 Princes Square, Bayswater, London, England, have invented a new and useful Improved Apparatus for Cooling Internal-Combustion Engines, of which the following is a specification.

This invention relates to the cooling of internal combustion engines, and provides an improved appa 'atus of the type in which air or gas is passed through the liquid of the circulatory cooling system.

According to the present invention the circulatory cooling system comprises a radiator into which air or gas is introduced under control by an automatically acting valve governed by the temperature of the engine or of the circulatory cooling liquid. and arranged between the source of air supply and the said radiator. The air or gas is thus brought into very intimate contact with the streams of liquid to be cooled. The air or gas may be near atmospheric pressure, or it may be highly compressed in which case the cooling effect produced by the free expansion of the air or is available for assisting the cooling of the circulating liquid.

The air or gas is supplied by a suitable pump or compressor, driven by the engine itself or by another source of power and is either delivered direct to the cooling system of the engine, or to a suitable reservoir. A pipe in which the automatic valve is fitted leads from the reservoir or from the compressor, as the case may be, to the ra diator.

The automatic valve for controlling the supply of air or gas may be of any suitable type adapted to be governed by temperature, for example, it may be a valve of the type which has a piston or a diaphragm actuated by the expansion of mercury or other liquid, or by a volatile medium. The thermal device by which the valve is operated is so placed that it is subjected to the heat of the cooling system, and according to the rise and fall of the temperature so is the valve opened more or less or entirely closed.

In the accompanying drawing :Figure l is a side elevation of an ordinary type of four-cylinder engine embodying these improvements in which a reservoir for compressed air is used, and Fig. 2 is a section of an automatic valve, comprised in the present improved cooling apparatus, drawn to a larg r scale.

At the front end oi the crank chamber of the engine is a compressor A driven in any suitable manner from the engine crank shaft and serving to force air through the small pipe 3 into a reservoir C. From this reservoir the air is conveyed by a pipe I) to an automatic valve E arranged in the re turn pipe V of the water cooling system above the cylinders. Vhen the automatic valve is open, the air passes through the pipe 1 and escapes through a number of small perforations in a distributer G into the water contained in the radiator H, and after passing through the water the air finally escapes through a pipe J which dips into a cup K provided with bailles L serving to separate and collect the water that may be carried out of the radiator by the air.

The automatic valve shown comprises a chamber M, see Fig. 2, containing mercury or a suitable volatile liquid and closed at the top by a flexible diaphragm N which is held in place by the cap 0. The passage through the cap forming a communication between the inlet pipe D and the outlet pipe F is normally closed by a ball P held down on its seat by a spring 0,. Between the ball P and the flexible diaphragm N is a rod R which serves as the means for lifting the ball when the diaphragm N is outwardly flexed by the increase of pressure within the chamber M due to excessive tem perature around the chamber. As the temperature around the chamber M diminishes and the pressure within the chamber consequently falls the ball Pi is pressed to its seat again and so closes the air passage and prevents further escape of air into the cool ing system.

lVhcn a reservoir is used as above described any desired degree of compression of the air or gas can be obtained thus admitting of securing the cooling effect produced by the free expansion of the air or gas when it enters the cooling system.

By the above described means it is possible to prevent over-heating of the engine in a most effective manner, and to maintain PatentedDec. 23,15913.

the cylinders and combustion spaces at the proper temperature for securing the maximum eiiiciency of Working.

I claim:

1. In an internal combustion engine, a circulatory cooling system, a radiator comprised in the said system, means for passing a gas into the said radiator, an automatic valve in the gas supply conduit, and means for governing the saidvalve in accordance With variations in the temperature of the liquid in said system.

2. In an internal combustion engine, conduits conveying a cooling liquid to and from the cylinder jacket, a radiator intercalated in the said conduits, means for in troducing a gas into the said. radiator near the lower part thereof, an automatic valve in the gas supply conduit, and means for governing the said valve in accordance With variations in the temperature of the said liquid.

3. In an internal combustion engine, a circulatory cooling system, a radiator comprised in the said system, a compressor, a valve controlling the delivery of gas from said compressor into the radiator, and means for governing the said valve in accordance With variations in the temperature of the liquid in said system.

i. In an internal combustion engine, a circulatory cooling system, a radiator in said system, a compressor, a valve controlling the gas supplied by said compressor, a thermostatic governing device for said valve, and means for delivering the gas from the said valve into the said radiator.

5. In an internal combustion engine, a circulatory cooling system, a radiator in the said cooling system, a thermostatically governed valve, means for conducting gas from the said valve into the said radiator, and an outlet permitting free escape of the gas from the said radiator.

(3. In an internal combustion engine, a cir culatory cooling system, a radiator in said system, a thermostatically governed valve, means for conducting gas from the said valve into the radiator, a pipe through which the gas escapes after passing through the said radiator, and a cup provided with battles into which the said pipe dips.

7. In an internal combustion engine, a circulatory cooling system, a radiator comprised in the said cooling system, a compressor, a valve controlling the gas supplied by said compressor, a thermostatic governing device for said valve, and a perforated distributing device for delivering gas from the said valve into the radiator.

S. In an internal combustion engine, conduits conveying a cooling liquid to and from the cylinder jacl'et, a radiator intercalated in the said conduits, a gas compressor, a compressed gas reservoir, conduits conveying gas from the reservoir into the liquid in the radiator, a valve intercalated in said gas conveying conduits, a device for thermostatically governing said valve in accordance with the temperature of the said cooling liquid, a device for distributing in the said liquid in the radiator the gas passed through the said valve, and a free outlet for the gas from the said radiator.

EDGAR DE NORMANVILLE.

IVitnesses HERBERT A. BEnsroN,

O. J. lVoirri-r.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G. 

